Word Finder - degeneration

definition

The process or state of growing worse, or the state of having become worse.

definition

That condition of a tissue or an organ in which its vitality has become either diminished or perverted; a substitution of a lower for a higher form of structure.

example

fatty degeneration of the liver

definition

Gradual deterioration, from natural causes, of any class of animals or plants or any particular organ or organs; hereditary degradation of type.

definition

A thing that has degenerated.

So, too, degeneration is not to be lightly assumed as the explanation of a simplicity of structure.

The variety of special developments of structure accompanying the atrophy of typical organs in the Opisthobranchia and general degeneration of organization is very great.

A survey of the vegetable kingdom indicates that evolution has proceeded, on the whole, from the simple to the complex; at the same time, as has been already mentioned, evidence of reduction or degeneration in common.

People with night blindness, macular degeneration and cataracts may find benefits in taking zinc as a supplement.

Careful annual selection by hand of the best seed is the only way to prevent degeneration.

The confluence of the regions of the body and the dislocation of apertures from their typical position are results of degeneration.

In acute and chronic alcoholism, in phthisis, and in other diseases this fatty condition may be very extreme, and is commonly found in association with other tissue changes, so that probably we should look on these changes as a degeneration.

Any of the abnormal conditions that bring about general or local defective nutrition is an important factor in producing fatty degeneration.

This splitting up of the fats previously combined with albumin in the cell by the action of natural ferments - lipases - and the setting free of the fats under the influence of toxins represent the normal and the pathological process in the production of so-called fatty degeneration.

It holds scattered fragments of limestone, and is itself the result of limestone degeneration.

Variations in the structure and forms of leaves and leafstalks are produced by the increased development of cellular tissue, by the abortion or degeneration of parts, by the multiplication or repetition of parts and by adhesion.

The later parts of E show a great degeneration in language, and a querulous tone due to the sufferings of the native population under the harsh Norman rule; "but our debt to it is inestimable; and we can hardly measure what the loss to English history would have been, if it had not been written; or if, having been written, it had, like so many another English chronicle, been lost."

In the severed axon the degeneration is first evident in a breaking down of the naked nerve filaments of the motor end plate.

Similarly, when the axons of the motor spinal cells are by severance of the nerve trunk of a muscle broken through, the muscle cells undergo "degeneration" - dwindle, become fatty, and alter almost beyond recognition.

This is the explanation of the repair of nerve trunks that have been severed, with consequent degeneration of the peripheral nerve fibres.

Examination of the cerebellum by the method of Wallerian degeneration has shown that a large number of spinal and bulbar nerve cells send branches up into it.

The escape of zoospores is effected by the degeneration of the sporangial wall (Chaetophora), or by a pore (Cladophora), a slit (Pediastrum), or a circular fracture (Oedogonium).

While there is a general tendency in the group to mucilaginous degeneration of the cell-wall, in Laminaria digitata there are also glands secreting a plentiful mucilage.

The effects of exposure in the case of white races are not only manifested by the acute attack of heat-stroke, but, if this is avoided by proper care, it is nevertheless certain that long residence in the Persian Gulf causes a certain amount of tissue degeneration, owing to the exposure of the body cells to abnormal conditions of temperature.

In the adult aquatic stage the alimentary canal shows signs of degeneration, and it seems probable that in this stage Gordian worms take no food.

In the dyspnoea of advanced valvular disease of the heart morphine relieves the distress and restlessness, and induces sleep. It should however be withheld if the heart has undergone fatty degeneration.

The early stages of morphinism are marked by moral degeneration; the patient seems to lose all sense of right and wrong, and will lie most plausibly and even thieve to obtain the drug; personal disorderliness, disregard of time, neglect of business and decline of family affection become soon evident.

Given in large doses it causes rapid and characteristic poisoning, with alterations in the blood and rapid degeneration of nearly all the internal organs; but in small doses-5 to 15 grains - it partly undergoes reduction in the blood and tissues, the chloride being formed and oxygen being supplied to the body-cells in nascent form.

But there must always have been some correspondence between the stages of social advance (or, in certain cases, of degeneration) and the religious interpretation of the world.

The degeneration produced by sedentary habits in all lamellibranchs has in the oyster reached its most advanced stage.

To these factors must be added the degeneration of the royal line-a degeneration inevitable in Oriental states.

Where there has been local mischief due to inflammation the dead leucocytes must be removed, and this is done either by their being converted into pus in one mass, and making their way through the tissues to the nearest surface, whether of skin or mucous membrane, from which it can be discharged, or they may undergo a process of fatty degeneration and absorption, leaving behind in some cases cheesy matter, in others hard connective tissue.

Brentano (On Gilds) holds that it is wrong to represent such regulations as monopolistic, inasmuch as there was no question whatever of a monopoly in that time nor until the degeneration of the craftgilds into limited corporations of capitalists.

For an account of the "degeneration of craftgilds" a general reference may be made to Brentano, On Gilds (1870), and C. Gross, The Gild Merchant (2 vols., 1890).

A widespread toxic action is indicated by the lesions found - cloudy swelling, which may be followed by fatty degeneration, in internal organs, capillary haemorrhages, &c. In septicaemia.

Perhaps the most complete degeneration is found in the Rhizocephala, which are parasitic on other Crustacea.

According to his theory, too, this habit of mind may be regarded as the result of degeneration, for in his view, as in Max Muller's, it is not primary, but the result of misconceptions.

After chronic poisoning a widely spread fatty degeneration is present.

The degeneration of the monarchy was clearly apparent on the death of Charles the Bald, when his son, Louis the Stammerer, was only assured of the throne, which had passed by Louis the right of birth under the Merovingians and been Stan,hereditary under the earlier Carolingians, through his election by nobles and bishops under the direction (877-879).

Too much linseed, often used in preparing horses for market, gives a similar appearance, but is liable to induce fatty degeneration of the liver; given in moderation it regulates the bowels and stimulates the more perfect digestion of other foods.

Alteration in the symmetrical arrangement as well as in the completeness and regularity of flowers has been traced to suppression or the non-development of parts, degeneration or imperfect formation, cohesion or union of parts of the same whorl, adhesion or union of the parts of different whorls, multiplication of parts, and deduplication (sometimes called chorisis) or splitting of parts.

Degeneration, or the transformation of parts, often gives rise either to an apparent want of symmetry or to irregularity in form.

Other modifications of some part of the flower, especially of the corolla and stamens, are produced either by degeneration or outgrowth, or by chorisis, or deduplication.

Stamens occasionally become sterile by the degeneration or non-development of the anthers, when they are known as staminodia, or rudimentary stamens.

The disk is frequently formed by degeneration or transformation of the staminal row.

The anterior antennae are fused with the anchoring attachment, whilst the posterior pair is vestigial, and the appendages of the mouth and body present various degrees of degeneration and specialization.

Arsenic and antimony do not form combinations with albumen, but they both greatly depress the central nervous system and circulation; and, if their action be long continued in large doses, they cause fatty degeneration of the viscera and disappearance of glycogen from the liver.

Chapter 3, ' absinthe for the people ', documents the connections between absinthe drinking by the poor and debates about degeneration.

Age-related macular degeneration Age-related macular degeneration (ARMD) is a very common cause of reduced vision in the UK.

Age related macular degeneration, cataract, multidimensional assessment.

Glucosamine can also reverse joint degeneration in osteoarthritis sufferers.

They did not have macular degeneration at the start of the study.

The majority of people with dry age-related macular degeneration do not suffer very severe visual loss.

Again, glutamate excess can lead to neuronal degeneration.

Are we dealing with just a handful of disease mechanisms or are there many different routes to retinal degeneration?